Improvement in metal-planing machines



W. HENDERSON. l Metal Waning-Machines.

Patented Feb. I7, 1874.

` NVENTOR.

WITNESSES.'

` 2 Shexets--Sheet'l W. HENDERSN.

Metal PlaningfMa'chins.

No.147,497. PatentedFeb.17,1874.

UNITED STATES PATENT VOEEICE I NVILLIAM HENDERSON, OF W'OROESTER, MASSACHUSETTS, ASSIGNOR TO HUI/[SELF AND LUOIUS IV. POND, OF SAME PLACE.

IMPROVEMENT IN METAL-PLANIN'G MACHINES.

Specification forming part of Letters Patent No. 147,497, dated Felruaiy 17,1874; application filed y July 26, 1873.

To all whom yt may concern Be it known that I, WILLIAM HENDERSON, of the city and county of Worcester and (Jommonwealth of Massachusetts, have invented certain new and useful Improvements in Ma chines for Planing Metal 5 and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of the specification, and in whichlFigure l represents atop or plan view ofso much of a planingfmachine as is necessary to illustra-te my present improvements. Fig. 2 represents a front view. Fig. 3 represents a front view of a portion of the machine shown it being' shown in inclined positions.

Fig. 4

represents a side view; and Fig. o represents a modification of a part of the machinethe finger acted upon by the movable table to chan-ge the position of the cutter.

To enable those skilled in the art to which my invention belongs to make and use the saine, I will proceed to describe it in detail.

The nature ofm y invention consists in the combination, in metal-planing machines, of mechanism, substantially as hereafter described, whereby the tool is automatically raised from its work while the material is moving in one direction, and before the cutis completed, and after the material has passed the point of the tool, the tool will bc automatically set to act work to be planed is secured, and said table may be moved back and forth by the ordinary mechanism in common use for operating the tables of planing and gear-cutting machines. rlhe part marked B supports the compound tool-frame C D, and may be in turn combined with the frame E, so that it can be moved to the right or left or up and down the same as the corresponding part is operated in common planingnnachines The cutting-tool a- :is attached to a frame, D, pivoted at b to the frame C, while through its lower end is passed an eccentric shaft, c, which turns in bearings in the side pieces or iianges d d, which project from the frame part C, while it has upon one end a beveled gear, e, which takes into beveled gear f upon the lower end of shaft g, which is in turn supported in bearings l l, secured to the side of frame C, and is also supported at the top by a bearing piece, 2, through which said shaft g can slide freely. -Above the bearing-piece 2 is arranged, upon shaft g, a beveled gear, 3, having a spline to lit the slot 4 in shaft g, said gear meshing into gear 5 on the front end of a short shaft supported in bearing-piece 6, while a gear, 7, is attached to its rear end, to mesh into gear S on shaft 9, the latter shaft being supported to turn in proper bearings 10 l0, and having a gear, 11, on one end, into which the teeth l2 of the rack-piece F mesh, while teeth 13 on the lower cnd of said racle piece mesh into gear 14 on the end of shaft h, to which the finger G is secured. Rack-piece F is held in place by collar-pieces m on, through which it can work freely up and down. A se? ries of holes, a, are made in the sides of table A for the reception of pins p, one of which is inserted on each side of the linger Gr.

The operation is as follows: Assuming that the table is being moved in the direction indi* cated by the arrow, Fig. 4, the work on the table will be cut or acted upon bythe eutting-edge s of the tool a, until pin p is forced against fm ger G, thereby turning gear 14, which raises rackbar F, and, by its action on gear 11, turn shaft g, gears 8, 7, 5, 3, f, and e, and, consequently, shaft c. As the eccentric shaft c turns, it turns frame D out, thereby raising the cutting-edge s until the face of the tool assumes a horizontal position 5 and as the table advances the cutting-edge s is elevated and the cutting-edge t depressed into the prope position to act upon the material beingplaned, when the motion of the table is reversed.

It will be seen that, by changing the pins p into different holes, the table A will move to a greater or less distance before the tool is changed, thus enabling the operator to adjust the machine to plane or cut different lengths and Widths of material.

The edges of finger G, which are acted upon 'by pins p, can be made of such inclination or form as to permit the tool to remain with its edge in a horizontal position for such a length of time as may be required, which will depend upon the nature and character of the Work.

By my improvements it Will be seen that the machine not only planes when the table is running in both directions, but the cutting-edge of the tool will be raised automatically before the entire cut is completed at each end or side of the work, consequently there will be no chipping out at the edges. In gear-cutting this is a very important feature, since there is very great danger, in cutting gears with a plan ing-tool, of chipping out the sides of the blank, when such operation is performed in the ordinary manner.

By reference to Fig. 3 it will be seen that the frames C D can be set so as to hold the tool in an inclined position, and that, too, Without disconnecting the mechanism which operates the eccentric shaft c. This is owing to the fact that gear 8 is connected to a slidin stand, H, and is also provided with a spline-pin, which Works in a slot cutl in shaft 9, While shaft g is free to slide through bearing 2 and gear 3.

The compound frame C D, when once adjusted, is securely held in place by means of a set-screw or bolt, I, which passes through the curved slots w and clamps frame C to the part B.

It Will be observed that my improved planer differs substantially from those pl anin g-m achines in which the cutting-tool is so constructed as to cut in both directions. vThis feature, broadly considered, I do not claim; but in my improved planing-machine the cutting-tool is raised before the entire cutis completed, and then, after the Work has passed, is automatically reset to complete the cut on the same line, when the Work is moved back. By this improvement a deep cut or chip can be taken without danger of breaking off the edge of the Work at the completion of the cut.

Having described my improvements in machines for planing metal, what I claim therein as new and of my invention, and desire to secure by Letters Patent, is

l. rlhe combination, With table A and part B of a metal-planin g machine, of an automatic device or mechanism for raising the cutting tool from its Work before the cut is completed, and then, after the Work has passed, resetting it to complete the cut upon the same line, as the Work is moved back by the reverse motion of the table, thereby preventing breaking or chipping out of the edges, substantially as 'described.

2. The combination, with the table A, of finger G, gear 14, rack-bar F, and gears ll, 8, 7, 5, 3, j', and e, and their respective shafts, substantially as and for the purposes set forth.

3. The combination, with the hinged or pivoted frame D, of the shafts c and g, with their respective gears, substantially as and for the purposes set forth.

4. The combination, with shafts g and 9, of the bearing 2 and sliding bearing-piece H, substantially as and for the purposes set forth.

VILLIAM HENDERSON.

\`Vi.tnesses TI-ros. H. Donc-n, E. E. Moolen. 

